whitcomb



(No Model.)

l E.. W. WHITGOMB. LUBRIICATOR POR MINING MACHINES.

Patented Peb. 19, 1889.

rif-msgs A trice.

Armar EDWIN W. WHITCOMB, OF CHICAGO, ILLINOIS, ASSIGNOR TO- GEORGE D.VVHITCOMB, OF SAME PLACE.

SPECIFICATION forming part'of Letters Patent No. 398,299, dated February19, 1889. Application filed August 29, 1888 Serial No. 284,085. (Nomodel.)

To. all whom it may conccrml Be it known that I, EDWIN W. WinrooMn,

a citizen of the United States, residing` at Chicago, in t-he county ofCook and State of Illinois, have invented a certain new andusefullmprovement in Lubricators tor Mining- Machines, which` is fullyset forth in the follubricatorgfFig. 3, a sectional. view the-`l same,taken 'on the line'l 1 of Fig. 2; and Fig. 4, a sectionallview taken onthe line 2 2 of Fig. 2,

Like letters refer figures of the drawings.

My invention relates to lubricators for mining-machines, and is adaptedmore particularly for use in connection with mining-ma-` chines of thecharacter set forth in Letters Patent No. 335,328, granted February 2,1886, to George D. iVhitcomb.

The object of my present invention'is to provide an automatic lubricatorfor furnishing a suitable lubricant to the pivoted cup mounted in thearm of theslide-valve of said machine and engaging with the cam-wheclofthe valvemotor.

I will now proceed to describe a construc-` tion -in which I havepractically carried out my invention in one form, and will thenparticularly point out in the claims those features which I deem to benew and desire to protect by Letters Patent.

In the drawings l have shown only so unich of the machine as isnecessary to illustrate the con nc'ction ot' the lubricator therewithand its mode oi' iipcmtion.l

-A represents a portion of the air-chest, and B the valvellicreimprovided with the arm (I, and the slotted cup /',pi\'otedtherein.' An oil passagiA or duel,y f", extends from the top oflubnicator.

to'like parts in all the wheel d and with the eccentric piston (l. D2represents the reciprocating gate or valve of the valve-motor. All theseparts are constructed substaiitially as in thc Letters Patent abovereferrred to, and therefore need no extended description here.

Mounted on iop ot' the valve-motor casing D is a plate, E, which formsthe base of the Upon this base is mounted an Oil-chamber, F, whichcontains the supply of Oil or other lubricant employed. Withinthischamber there is arranged a snugly-itting piston, F free to moretherein. The upper end of the chamber is closed by means of a suitablecap or screw-bolt, j', which may be remevedwhenit is desired to rcmovothe pis ton F and reill the chamber. An air duct or passage, j", leadsfrom the air-space a within the valve-chest and valve-casing to theinterior of the chamber F, opening into the.A same at a point near thetop thereof' and above thel piston F.

G represents a rib or bodyot metalformed upon the top of the base E.Through this rib there vis bored near the front a vertical hole, Il,which forms a pump chamber or cylinder, it beingI closed at the top bymeans of a screw-plug, l1, or other suitable device.

H represents a piston fitting snugly and reciprocating within t-hepump-cylinder 1I, it being provided with a stem or rod,h, which extendsdownward and rests upon the top of the gate or valve D2. An oil duct orpassage, i', leads from the lower end ofthe oil-chamber F to thepump-chamber lL, opening into this latter at a point just above thepiston when said pist-on is in its lowest position. 'A portion of thisduct or passage i is vertical,

, as shown in Fig-3, and is provided with a valve-seat, t', at its upperend, tapering or conical in form, as shown, to correspond with thecorrespondingly tapered or conical end of a screw-valve, I.

J indicates a downward extension or rib formed on the base E andterminating immediately above the end ofthe arm C, as shown in Fictl.Aductor iassacc ',extcndsfromthe the arm (i through ioihccup c. Drepresents 'op oil thc pump-chamber ll diagonally and .the valve-motorcasing, in which is mounted the motor-shaft 1)', provided with thecanitension J, terminating at thc lower end of roo 'unen verticallydownward tothe bottom of the the same at a pointv immediately abi''ithelows: The chamber F ,being` supplied With'oil and the. mining-.machinebeing in operation,

' the compressed air passes from the-air-spac'e wheel D to lubricatethis latter.

5o Having thus described my invcniion,ivhatl l a upward through theductor passage f and exerts its pressure upon theupp'ersurface of v thepistonF. This pressure causes'the pis` ton vto force the oil throughthdii'or 'pa'ssage i into the pump-chamber H, thus filling" the same.The amount of oil delivered to the pump-chamber may be regulated by adjust-l ing the, valve I nearer` to' or farther *from the.'

valve-seat il', or the supply of o il may be entirely cut 0E, whendesired, by closing said valvekr' yThe reciprocation of the gate D2imparts' to the piston Hfareciprocating motion, which at each upwardstroke forcesA the oil contained in the pump-chamber H into and throughthe duct or passage j. The oil is thus delivered on top of the end ofthe arm Gand into the oil-passage c', through whichjt passes downwardand serves to lubricaie the cup c. The extension J serves to prevent thearm C from rising, and thus disengaging itself from the-cam-wheel, andin case the said arm rises suiaciently to come in contactl'with theextensiOnJ the surfaces thus broughtinto contact will bethoroughly'luhricated andl friction or binding WillV he prevented. Theoil notonly lubricates the upper surface of the cup c, but it alsolWorks downward around the same and-lubricates the sides thereof, and asufficient quantity will fall upon the cam- ]y means of the apparatus Iamtherefore enabled to obtain a constant and automatic supply of oil forthe parts to be lubricated, the quantity vfurnished being 'capable oftht` nicest regulation.

It is obvious'fthat various modifications in the details of constructionand arrangement of parts may be made without departing from theprinciple of my invention, and I therefore do not wish to be understoodas limiting myself strictlyto the precise details hcreinbc fore'described, and shown in the drawings.

claim as' new', Patent, is-.

1. The combination, with the valve and valve-motor of a pneumaticmining-machine, `of a lubricator provided with an oil-chamber having apiston located therein, and with an airduct or passage to supplyllcompressed air and ldesiret secure by Letters' ,Sagethroughwhich theoil is discharged, substantially as and for the purposes specified.

.2; The" combination, with the valve and valve-motor of amining-machine, of a' lubricator provider] with an oil-chamber having afrom the valve-chestto said chamber on one valve-motor, an oil-ductleading from the oilchamber to said pump, anda second oil-duct leadingfrom the pump to the point of connection between the valve andvalve-motor, substantially as and for the purposes specified.

3. The combination, with the valve and an oilfehamber having a pistonarranged therein, a lduct to admit compressed air to one side-of saidpiston, a pump actuated by the valve-motor, an oil-duct leading from theoilchamber to said pump, a valve arranged in said oil-duct to controlthe passageof the oil, and a second oil-duct leading from the pump tothepoint of discharge, substantially as and for thepurposes speciiied.

I 4. .The -"eombination, with the valve and valve-motor,vi the latterprovided with the vertically-recipfrocati ng gate D2, of the lubricatorprovided' with a pump-chaniber, Il, a piston, H', arranged insaidchamber and having its rod Aor stem hf resting' on the gate D2, anoilchamber, F, avingpiston", an air-passage, ff, for admi? 'ng air abovesaid piston, and suitable due s orpassages leading from the pump-chamberand Afrom the pump-chamber to the pointof discharge, substantially asand for the purposcsspeciied. Y

EARRIF. FEIGEL, IRVINE MILLER.

to operate ,said piston, and an oil duct or pas.

piston arranged therein, an air-duct leading.

valve-motor, of the lubricator provided with' oil-chamber -fbelow thepiston .therein to the 65 'side ot the piston, a pump actuated by the

